Add hashPrefix option unit tests

Author: pascalduez

test/api/hashPrefix.js

@@ -0,0 +1,39 @@
+const detachHook = require('../sugar').detachHook;
+const dropCache = require('../sugar').dropCache;
+
+suite('api/hashPrefix', () => {
+  let samples = [];
+
+  suite('using string pattern and hashPrefix', () => {
+    let tokens;
+
+    test('should return tokens with prefixed id', () => assert.deepEqual(tokens, {
+      color: 'oceanic__color___3xlBZ',
+    }));
+
+    setup(() => {
+      hook({generateScopedName: '[name]__[local]___[hash:base64:5]', hashPrefix: 'test'});
+      tokens = require('./fixture/oceanic.css');
+      samples.push(tokens);
+    });
+  });
+
+  suite('using string pattern', () => {
+    let tokens;
+
+    test('should return tokens with different hashes', () => assert.notDeepEqual(
+      samples
+    ));
+
+    setup(() => {
+      hook({generateScopedName: '[name]__[local]___[hash:base64:5]'});
+      tokens = require('./fixture/oceanic.css');
+      samples.push(tokens);
+    });
+  });
+
+  teardown(() => {
+    detachHook('.css');
+    dropCache('./api/fixture/oceanic.css');
+  });
+});